<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>预览页面</title>
    <style>
        @media screen and (max-width:800px){
            body{
                width: 100% !important;
                margin: 0 auto;
            }
        }
        body{
            width: 800px;
            margin: 0 auto;
        }
    </style>
</head>
<body>
    {$content|html_entity_decode}
</body>
</html>